| 20100052610 | Battery charger with charging reminding capability - A battery charger includes a rechargeable battery for providing electric power to an external rechargeable battery through a damper unit so as to charge the external rechargeable battery, and a control unit coupled to a charging socket and the rechargeable battery and operable to charge the rechargeable battery through a charging signal received by the charging socket. An alarm unit is coupled to the rechargeable battery and the charging socket for generating a detecting signal based on a battery voltage of the rechargeable battery, for outputting a reminder output upon detecting that a potential of the detecting signal is less than that of a reference signal, and for terminating the reminder output when the charging socket receives the charging signal. | 03-04-2010 |
